Line 52: |
Line 52: |
| | 1 | | | 1 |
| | n | | | n |
− | | * 2.0 for Archie porosity * 1.8 (or less) for rocks with clayey matrix or fractures * 4.0 for very strongly oil-wet rocks | + | | |
| + | * 2.0 for Archie porosity |
| + | * 1.8 (or less) for rocks with clayey matrix or fractures |
| + | * 4.0 for very strongly oil-wet rocks |
| | | |
| | Not sure of rock type | | | Not sure of rock type |
Line 59: |
Line 62: |
| | 2 | | | 2 |
| | R<sub>w</sub> | | | R<sub>w</sub> |
− | | * Value calculated from SP log * Estimated from R<sub>w</sub> catalogs * Estimated from wet zone R<sub>o</sub> value * Measured from water sample | + | | |
− | | + | * Value calculated from SP log |
| + | * Estimated from R<sub>w</sub> catalogs |
| + | * Estimated from wet zone R<sub>o</sub> value |
| + | * Measured from water sample |
| | Thin beds, hydrocarbons in zone, or fresh formation waters make SP calculations uncertain | | | Thin beds, hydrocarbons in zone, or fresh formation waters make SP calculations uncertain |
| | Use thin-bed correction or another method | | | Use thin-bed correction or another method |
Line 72: |
Line 78: |
| | 4 | | | 4 |
| | m | | | m |
− | | * 2.0 for Archie porosity * 1.7–2.0 for shaly sandstones * 2.0–2.5 for porosity with connected vugs * 2.5–3.0 for nonconnected moldic porosity * ~1.0 for fractured rocks | + | | |
− | | + | * 2.0 for Archie porosity |
| + | * 1.7–2.0 for shaly sandstones |
| + | * 2.0–2.5 for porosity with connected vugs |
| + | * 2.5–3.0 for nonconnected moldic porosity |
| + | * ~1.0 for fractured rocks |
| | Not sure of rock type or pore geometry | | | Not sure of rock type or pore geometry |
| | Use 2.0 | | | Use 2.0 |